Malicious PDF — malware analysis report

Static analysis result for SHA-256 d348d04cb12a55ad…

MALICIOUS

PDF

41.8 KB Created: 2020-10-15 21:31:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d75801418eb7a3b153d53855243d2417 SHA-1: 39808d92c88d2362d3eac4621c7680ad9074626c SHA-256: d348d04cb12a55ad9ece5761d66390525451c5ac6a843457349dbc89b52c8dbc
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.me/pify?keyword=mindset+reset+2020+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366040/normal_5f86f988cfb91.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366659/normal_5f871f0e4ba33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366311/normal_5f87157227cbd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366982/normal_5f8730e3e66cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367645/normal_5f87669642484.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369142/normal_5f87dfd83631c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365601/normal_5f8762ca4d9b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366973/normal_5f88700ec3aa4.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/1867598.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/2359eaa682.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365580/normal_5f87a367814f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366993/normal_5f876568a4d3a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367642/normal_5f883dabc63ac.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fa9a3bf-47e0-4f5f-ad41-b07f38d7fe75/60906827573.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a87968f-0159-445f-b5f2-e0e85556a3a4/54009081684.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f05d590-8f9a-4188-9f8f-47331d1b23f5/zuximaze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc1a3ad8-dd23-4491-88f3-205c662e741a/pobodafobisoditago.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5145eb47-eedb-4e4e-b967-e53cea18f0b5/59609941333.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da723209-0445-441b-8bc8-76fe6071baea/pikusirumenopi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a3ec441-7996-4d44-8146-7894b0d0b79c/fipizeziluvogasag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bfa89a4-9145-4d44-ab6a-53bd9eda2d2a/76950229669.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67CB 5032 bytes
SHA-256: 9837c8acdcf912ecf55dc06a4018fdd69f98381de643d2cb72708f3137984e4c
font_01_sfnt_off000078f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78F9 9820 bytes
SHA-256: f907808305a13eebd28370e3f9fc03fe03c8ebd951a6948b4d72835b183ea1a1

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